29947502971 has 2 divisors, whose sum is σ = 29947502972. Its totient is φ = 29947502970.

The previous prime is 29947502969. The next prime is 29947502989. The reversal of 29947502971 is 17920574992.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29947502971 - 2¹ = 29947502969 is a prime.

Together with 29947502969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (29947502171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14973751485 + 14973751486.

It is an arithmetic number, because the mean of its divisors is an integer number (14973751486).

Almost surely, 2^29947502971 is an apocalyptic number.

29947502971 is a deficient number, since it is larger than the sum of its proper divisors (1).

29947502971 is an equidigital number, since it uses as much as digits as its factorization.

29947502971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 29947502971 in words is "twenty-nine billion, nine hundred forty-seven million, five hundred two thousand, nine hundred seventy-one".